//2009/08/20 19:04:12
#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <queue>
#include <sstream>
#include <algorithm>

using namespace std;

class EsperantoNumbers
{
public:
    string nameThisNumber(int x)
    {
		v[1] = "unu";
		v[2] = "du";
		v[3] = "tri";
		v[4] = "kvar";
		v[5] = "kvin";
		v[6] = "ses";
		v[7] = "sep";
		v[8] = "ok";
		v[9] = "nau";
		v[10] = "dek";
		int a = x / 10;
		int b = x % 10;
		if(a == 0) return v[b];
		if(a == 1) return b==0 ? v[10]:v[10]+" "+v[b];
		if(b == 0) return v[a]+v[10];
		return v[a]+v[10]+" "+v[b];
    }
private:
    map<int, string> v;
};
